Millions of years ago, a diverse group of reptiles roamed the planet Earth. The study of dinosaurs became a fascinating subject of study after their fossils were found. Following that, there are reportedly over a thousand different species of dinosaurs to date. Dinosaurs lived through different periods. The first was called the Triassic period. Then came the Jurassic Period and then the Cretaceous period. During the Cretaceous period, the climate was generally warm. New species of mammals, birds and flowers appeared, although the land was still dominated by dinosaurs. Here are ten dinosaurs from the Cretaceous Period 1) Tyrannosaurus One of the largest carnivore land dinosaur of that time, the Tyrannosaurus had a height of up to 40 feet. It was known to have the greatest bite force and can take down a well-armored prey in seconds. 2) Triceratops Despite its ferocious appearance, the triceratops was a herbivore who moved very slowly. They had two large horns on the top and a third right...